Severity Rating: Important
Revision Note: V1.1 (May 13, 2016): Bulletin revised to change the vulnerability severity rating for Windows 8.1 and Windows RT 8.1 to Not applicable, because these operating systems are not affected by the vulnerability described in this bulletin. Customers who have applied security update 3155784 do not need to take any further action. This is an informational change only.
Summary: This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow information disclosure if a USB disk mounted over Remote Desktop Protocol (RDP) via Microsoft RemoteFX is not correctly tied to the session of the mounting user.